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An optical amplifier is a device which receives some input signal light and generates an output signal with higher optical power. Typically, inputs and outputs are laser beams (very rarely other types of light beams), either propagating as Gaussian beams in free space or in a fiber. Amplificarea are loc într-un așa-numit mediu de câștig, care trebuie „pompat” (adică prevăzut cu energie) dintr-o sursă externă. Majoritatea amplificatoarelor optice sunt pompate optic sau electric.
Diferite tipuri de amplificatoare diferă foarte mult, de exemplu, în ceea ce privește proprietățile de saturație. For example, rare-earth-doped laser gain media can store substantial amounts of energy, whereas optical parametric amplifiers provide amplification only as long as the pump beam is present. As another example, semiconductor optical amplifiers store much less energy than fiber amplifiers, and this has important implications for optical fiber communications. -
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ROF Modulator electro-optic EDFA Amplificator optic Amplificator de fibre dopat ERBIUM Amplificator YDFA
An optical amplifier is a device which receives some input signal light and generates an output signal with higher optical power. Typically, inputs and outputs are laser beams (very rarely other types of light beams), either propagating as Gaussian beams in free space or in a fiber. Amplificarea are loc într-un așa-numit mediu de câștig, care trebuie „pompat” (adică prevăzut cu energie) dintr-o sursă externă. Majoritatea amplificatoarelor optice sunt pompate optic sau electric.
Diferite tipuri de amplificatoare diferă foarte mult, de exemplu, în ceea ce privește proprietățile de saturație. For example, rare-earth-doped laser gain media can store substantial amounts of energy, whereas optical parametric amplifiers provide amplification only as long as the pump beam is present. As another example, semiconductor optical amplifiers store much less energy than fiber amplifiers, and this has important implications for optical fiber communications.
